A leaping formwork support system

Abstract

The present invention relates to a straddling formwork support system, including a foundation pit, wherein the bottom surface of the foundation pit is paved with a raft foundation, the slope surface of the foundation pit is paved with a slope protection, the upper end of the slope protection extends to the top surface of the foundation pit to form a slope protection flange, and an I-beam platform is set up between the slope protection flange and the raft foundation; the I-beam platform includes a paved I-beam, a plurality of groups of support frames and straight steel bars, and the upper end of the support frame is set up on the paved I-beam; straight steel bars are welded between the plurality of groups of support frames, and a plurality of steel bar support feet are also arranged at the upper end of the support frame; steel pipe scissor braces are welded between two adjacent groups of support frames; full-height support frames are set up on the I-beam platform and the raft foundation. The present invention can be used as a formwork support system or a flat foundation of a tall formwork support system by setting up a flat I-beam platform in a height difference area and above a slope area spanning the foundation pit support.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a straddling formwork support system. Background Art

[0002] During the construction process, it is inevitable to encounter the situation of full-floor support frame erection under various circumstances. The common formwork support system foundation requirements are flat and solid. The ordinary formwork support frame requires the foundation height difference to be no more than 1000mm, and the vertical pole spacing is generally about 900mm, which needs to be determined by calculation; however, since the current building types are developing in the direction of high, large, precise and cutting-edge, there are always some special parts that need to be erected with special formwork support systems, and even tall formwork support systems are erected under special conditions. For example, in venue buildings, the more common building structure is the type of small at the bottom and large at the top. The upward floors will have structural external cantilever components protruding beyond the edge of the lower floors. This requires the erection of a full-floor support frame on the outside of the main building, and the erection height is up to the top-level structural external cantilever components. Often this type of frame is still a tall formwork support system.

[0003] In the above situation, the formwork support system at some locations is likely to span a large height difference and span the slope area of ​​the foundation pit support to set up a tall formwork support system. However, the slope protection surface of the foundation pit support itself is not strong enough, and according to relevant specifications, the foundation of the full-height support frame is required to be flat and solid. The slope protection surface of the foundation pit support obviously cannot be used as the foundation of the full-height support frame body. Therefore, a spanning formwork support system is proposed. Summary of the invention

[0004] In order to solve the problem that there is no flat foundation at the bottom of the full-floor support frame and it is inconvenient to set up when crossing an area with a large height difference or a slope area of ​​foundation pit support, the present invention provides a spanning formwork support system. By setting up an I-beam platform above the slope area, it can be used as a flat foundation for the formwork support system or a tall formwork support system.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A spanning formwork support system comprises a foundation pit, wherein a raft foundation is laid on the bottom surface of the foundation pit, a slope protection is laid on the slope surface of the foundation pit, the upper end of the slope protection extends to the top surface of the foundation pit to form a slope protection flange, and an I-beam platform is set up between the slope protection flange and the raft foundation;

[0007] The I-beam platform includes a paving I-beam arranged on the slope flange, a plurality of groups of triangular support frames and straight steel bars, wherein the plurality of groups of support frames are arranged vertically at intervals along the side edge of the foundation pit, and the upper end of the support frame is placed on the paving I-beam;

[0008] Straight steel bars are welded between multiple groups of support frames to limit the position of the support frames, and a number of steel support feet are also provided on the upper ends of the support frames; steel pipe scissor braces arranged in an "X" shape are welded between two adjacent groups of support frames to reinforce the support frames;

[0009] Full-height support frames are set up on the I-beam platform and the raft foundation. The horizontal bars of the full-height support frame on the raft foundation extend to the support frame position and are welded to it to form node one. The vertical bars of the full-height support frame on the I-beam platform are inserted into the steel support feet to prevent lateral displacement.

[0010] Furthermore, a foundation pit slope is distributed between the foundation pit top surface and the foundation pit bottom surface, the I-beam platform is located above the foundation pit slope, and the I-beam platform, the foundation pit top surface and the foundation pit bottom surface are arranged in parallel.

[0011] Furthermore, the length direction of the paving I-beams is consistent with the arrangement direction of several groups of support frames; each group of support frames includes I-beam columns, I-beam beams and I-beam braces connected in a triangular structure, the I-beam columns are vertically arranged on the raft foundation, the I-beam beams are welded between the paving I-beams and the I-beam columns, and the I-beam braces are welded between the I-beam beams and the I-beam columns.

[0012] Furthermore, a square steel pad is welded at the bottom of the I-beam column to disperse the force of the I-beam column; the upper end of the I-beam diagonal brace is welded to the middle of the I-beam beam, and the lower end is welded to the bottom of the I-beam column.

[0013] Furthermore, the straight steel bars are welded between the I-beams of the multiple groups of support frames to ensure that the positions of the I-beams do not change, and the steel bar support legs are welded on the I-beams, and the steel bar support legs are arranged vertically;

[0014] The steel pipe scissor brace is welded between the I-beam columns of two adjacent groups of support frames to maintain the stability of the I-beam columns.

[0015] Furthermore, the horizontal rod of the full-floor support frame on the raft foundation extends to the position of the I-beam column and is welded and fixed thereto to form node one.

[0016] Furthermore, a structural column is arranged on the raft foundation, the structural column corresponds to the position of the I-beam column, and the full-height support frame is arranged around the structural column;

[0017] Column-holding steel pipes are arranged on the four sides of the structural column to hold the structural column. The column-holding steel pipes extend to the position of the I-beam column and are welded and fixed thereto to form node two.

[0018] Through the above technical solution, the beneficial effects of the present invention are:

[0019] The present invention has a reasonable structural design and provides a support system for erecting a full-frame across height differences and sloped areas. It can solve the problem of erecting a full-frame in special parts that cannot be solved by existing conventional formwork support systems, as well as the problem of erecting a tall formwork full-frame support system across a sloped area with a height difference. An artificially constructed I-beam platform is used as the foundation of the uprights of a flat and solid formwork support system, and a full-frame support frame can be built thereon.

[0020] The present invention uses I-beam materials commonly found on construction sites and fully utilizes the original building materials on the construction site to build an integral I-beam platform. No other new building materials are needed, and the construction is convenient, fast, and cost-effective. All parts of the I-beam platform are strongly reinforced to make it serve as the basis of a formwork support system or even a tall formwork support system, which is convenient for cooperating in building a full-floor support frame. The actual engineering application is safe and reliable, so as to achieve the good effect of solving big problems with low costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a striding formwork support system of the present invention.

[0022] Figure 2 The present invention is a leaping formwork support system Figure 1 Schematic diagram of the distribution of steel pipe scissors braces in the middle A direction.

[0023] Figure 3 It is a schematic diagram of constructing an I-beam platform of a striding formwork support system of the present invention.

[0024] Figure 4 The present invention is a schematic diagram of the connection between a column-holding steel pipe and an I-beam column in a straddling formwork support system.

[0025] Figure 5 This is a schematic diagram of the node two distribution of a striding formwork support system of the present invention.

[0026] Figure 6 The present invention is a leaping formwork support system Figure 5 Top view of the .

[0027] Figure 7 It is a schematic diagram of building a full-floor support frame of a striding formwork support system of the present invention.

[0028] Figure 8 It is a node distribution diagram of a striding formwork support system of the present invention.

[0029] The numbers in the attached figure are: 1 is foundation pit, 2 is raft foundation, 3 is slope protection flange, 4 is paving I-beam, 5 is straight steel bar, 6 is steel bar support foot, 7 is steel pipe scissors brace, 8 is full-floor support frame, 9 is I-beam column, 10 is I-beam beam, 11 is I-beam diagonal brace, 12 is steel pad, 13 is node one, 14 is structural column, 15 is column-holding steel pipe, 16 is node two, and 17 is slope protection. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0031] like Figure 1 to Figure 8 As shown, a spanning formwork support system comprises a foundation pit 1, the bottom surface of the foundation pit 1 is paved with a raft foundation 2, the raft foundation 2 is the internal foundation of the main building, that is, one of the supports of the integral I-beam platform, the slope surface of the foundation pit 1 is paved with a slope protection 17, the upper end of the slope protection 17 extends to the top surface of the foundation pit 1 to form a slope protection flange 3;

[0032] A slope of foundation pit 1 is distributed between the top surface of foundation pit 1 and the bottom surface of foundation pit 1, and the slope of foundation pit 1 is the part that the full-floor support system needs to cross; an I-beam platform is set up between the slope protection flange 3 and the raft foundation 2, and the I-beam platform is located above the slope of foundation pit 1, and the I-beam platform, the top surface of foundation pit 1 and the bottom surface of foundation pit 1 are arranged in parallel.

[0033] The I-beam platform is the foundation of a tall formwork support system constructed artificially with I-beams, one end of which is supported on the raft foundation 2 and the other end is supported on the slope flange 3. All support points are on a solid foundation, avoiding the possibility of the I-beam platform sinking.

[0034] like Figure 3 In the present embodiment, the I-beam platform comprises a padding I-beam 4 arranged on the slope flange 3, several groups of support frames in a triangular structure and straight steel bars 5. The padding I-beam 4 is one of the supports of the overall I-beam platform. The length direction of the padding I-beam 4 is consistent with the arrangement direction of the several groups of support frames. The several groups of support frames are arranged vertically at intervals along the side edge of the foundation pit 1, and the upper ends of the support frames are erected on the padding I-beam 4.

[0035] Specifically, each group of the support frames includes an I-beam column 9, an I-beam beam 10 and an I-beam brace 11 connected in a triangular structure. The I-beam column 9 is vertically arranged on the raft foundation 2. The I-beam column 9 supports the I-beam beam 10. In order to disperse the force on the I-beam column 9, a square steel pad 12 is welded to the bottom of the I-beam column 9. The steel pad 12 can increase the contact area between the I-beam column 9 and the raft foundation 2.

[0036] The I-beam 10 is welded between the paving I-beam 4 and the I-beam column 9. The I-beam 10 is the vertical pole foundation of the formwork support system. The I-beam 10 is arranged parallel to the raft foundation 2. The I-beam diagonal brace 11 is welded between the I-beam 10 and the I-beam column 9, that is, the upper end of the I-beam diagonal brace 11 is welded to the middle of the I-beam 10, and the lower end is welded to the bottom of the I-beam column 9;

[0037] The I-beam diagonal brace 11 is reinforced as the middle support point of the I-beam beam 10. One end of the I-beam brace 11 is fully welded and reinforced with the I-beam beam 10, and the other end is fully welded and reinforced with the I-beam column 9 to form a stable triangular support system and increase the middle support point of the I-beam beam 10 to reduce the span of the I-beam beam 10 and ensure the safety of the overall I-beam platform.

[0038] In order to ensure that the I-beams 10 do not move, the straight steel bars 5 are welded between the I-beams 10 of multiple groups of support frames to ensure that the positions of the I-beams 10 do not change; the steel support feet 6 are welded on the I-beams 10, and the steel support feet 6 are arranged vertically.

[0039] In order to reinforce adjacent support frames, steel pipe scissors struts 7 arranged in an "X" shape are welded between the I-beam columns 9 of two adjacent groups of support frames. One end of the steel pipe scissors strut 7 is fully welded and reinforced to the upper end of an I-beam column 9, and the other end is fully welded and reinforced to the lower end of an adjacent I-beam column 9. The steel pipe scissors strut 7 serves as a reinforcement of the I-beam column 9 to maintain the stability of the I-beam column 9.

[0040] The I-beam platform and the raft foundation 2 are both provided with a full-height support frame 8, the vertical rod of the full-height support frame 8 on the I-beam platform is plugged into the steel support foot 6, and the steel support foot 6 is used to prevent lateral movement, and the full-height support frame 8 on the raft foundation 2 is the full-height support frame 8 inside the main building;

[0041] like Figure 8 As shown, when the raft foundation 2 is not provided with a structural column 14, the horizontal rod of the full-height support frame 8 on the raft foundation 2 extends to the position of the I-beam column 9 and is welded and fixed thereto to form a node 13, which plays a role of connecting support;

[0042] like Figure 4~Figure 6 As shown, when a structural column 14 is provided on the raft foundation 2, and the structural column 14 corresponds to the position of the I-beam column 9, the full-floor support frame 8 is arranged around the structural column 14. At this time, column-embracing steel pipes 15 are set up around the structural column 14. The column-embracing steel pipes 15 are used to embrace the structural column 14. Adjacent embracing steel pipes are fastened by connecting fasteners. One of the column-embracing steel pipes 15 extends to the position of the I-beam column 9 and is welded and fixed to it to form a node 2 16, which also plays a role of connecting support.

[0043] The present invention provides a full-floor support system that spans height differences and slope areas, transforms the pole foundation of the formwork support system from the high and low spans and slope areas into a flat and solid foundation, and adopts an artificially constructed integral I-beam platform. The I-beam platform has a stable structure and can be used as a flat foundation for building a formwork support system or even a tall formwork support system.

[0044] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A spanning formwork support system, comprising a foundation pit (1), characterized in that: The bottom surface of the foundation pit (1) is paved with a raft foundation (2), the slope surface of the foundation pit (1) is paved with a slope protection (17), the upper end of the slope protection (17) extends to the top surface of the foundation pit (1) to form a slope protection flange (3), and an I-beam platform is set up between the slope protection flange (3) and the raft foundation (2); The slope of the foundation pit (1) is distributed between the top surface of the foundation pit (1) and the bottom surface of the foundation pit (1); the I-beam platform is located above the slope of the foundation pit (1); the I-beam platform, the top surface of the foundation pit (1) and the bottom surface of the foundation pit (1) are arranged in parallel; the I-beam platform comprises a paving I-beam (4) arranged on the slope flange (3), a plurality of groups of support frames in a triangular structure and straight steel bars (5); the plurality of groups of support frames are arranged vertically at intervals along the side edge of the foundation pit (1); the upper ends of the support frames are mounted on the paving I-beams (4); and the length direction of the paving I-beams (4) is consistent with the arrangement direction of the plurality of groups of support frames; Straight steel bars (5) are welded between the multiple groups of support frames to limit the position of the support frames, and a plurality of steel support feet (6) are also provided at the upper ends of the support frames; steel pipe scissor braces (7) arranged in an "X" shape are welded between two adjacent groups of support frames to reinforce the support frames; The I-beam platform and the raft foundation (2) are both provided with a full-height support frame (8), the horizontal rods of the full-height support frame (8) on the raft foundation (2) extend to the support frame and are welded thereto to form a node 1 (13), and the vertical rods of the full-height support frame (8) on the I-beam platform are inserted into the steel support foot (6) to prevent lateral movement.

2. A straddling formwork support system according to claim 1, characterized in that: Each group of the support frames comprises an I-beam column (9), an I-beam beam (10), and an I-beam diagonal brace (11) connected in a triangular structure. The I-beam column (9) is vertically arranged on the raft foundation (2). The I-beam beam (10) is welded between the cushion I-beam (4) and the I-beam column (9), and the I-beam diagonal brace (11) is welded between the I-beam beam (10) and the I-beam column (9).

3. A straddling formwork support system according to claim 2, characterized in that: A square steel pad (12) is welded to the bottom of the I-beam column (9) to disperse the force on the I-beam column (9); The upper end of the I-beam diagonal brace (11) is welded to the middle of the I-beam beam (10), and the lower end is welded to the bottom of the I-beam column (9).

4. A straddling formwork support system according to claim 2, characterized in that: The straight steel bars (5) are welded between the I-beams (10) of the plurality of support frames to ensure that the positions of the I-beams (10) do not change, and the steel bar support legs (6) are welded on the I-beams (10), wherein the steel bar support legs (6) are arranged vertically; The steel pipe scissor braces (7) are welded between the I-shaped steel columns (9) of two adjacent groups of support frames to maintain the stability of the I-shaped steel columns (9).

5. The straddling formwork support system according to claim 2, characterized in that: The horizontal rod of the full-height support frame (8) on the raft foundation (2) extends to the position of the I-beam column (9) and is welded and fixed thereto to form a node one (13).

6. A straddling formwork support system according to claim 5, characterized in that: A structural column (14) is arranged on the raft foundation (2), the structural column (14) corresponds to the position of the I-beam column (9), and a full-height support frame (8) is arranged around the structural column (14); Column-embracing steel pipes (15) are arranged around the sides of the structural column (14) for embracing the structural column (14); the column-embracing steel pipes (15) extend to the position of the I-shaped steel column (9) and are welded and fixed thereto to form a second node (16).

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